OPT3 — Pisum sativum

Summary

PsOPT3 (PSAT3G038640) on chromosome 3LG5 encodes an oligopeptide transporter family protein with transition metal ion and oligopeptide transmembrane transporter activity. The gene is associated with xylem-to-phloem iron transport, cellular monoatomic cation homeostasis, and multicellular organismal iron ion homeostasis. It has been linked to iron homeostasis, cadmium distribution and partitioning, iron acquisition and mobilization, and disease resistance. The protein localizes to the membrane, plasmodesma, cytosol, and plasmalemma. Studies of related genes in other species connect the family to iron, copper, and metal transport, seed iron accumulation, embryo development, and cadmium accumulation in seeds, with further associations to shoot fresh weight, iron and cadmium concentration, and disease tolerance.